As Alex Hugo is kayaking down a river, he witnesses a man falling from the summit of the gorges. The victim was about to take part in a very difficult selection test. Alex is convinced that this is murder.
Gunshots are fired at Juliette's wedding. Alex suffers a minor wound, but the groom is gravely injured. Who wants to kill Martin, the groom, and what's he been hiding?
Alex Hugo watches, powerless, as a young girl is kidnapped. Audrey is not just some passer-by but the daughter of one of his friends, who had died saving his life. As he tries to better understand Audrey's personality, his becomes increasingly concerned as he discovers the extent of her radicalization.
